Ego Topper 2 Inch King Memory Foam Mattress Topper, Gel Foam Mattress, Medium Liquid Gel Infusion Built for Comfort: 2 inch of AeroFusion Memory Foam is crafted to fit body's micro pressure points and conform to body's curves and shape for comfort throughout your sleep. Putting the topper on top of the mattress and under the mattress cover will give you a new and softer mattress, extending the life of the mattress and giving you a new sleep experience. Cool Breathable: Gel infusion promotes temperature regulation and the ventilated holes enhance breathable property that allows heat and humidity normally trapped under covers to be cycled out of the mattress. CertiPUR-US Certified: Our topper is crafted for safety, durability, performance, emissions, and content. Made without harmful substances, our memory foam and fabrics have been independently safety tested to comply with all applicable mandatory and voluntary safety standards for mattress products. In a Box Delivery: Your topper will be compressed, rolled, and in a compact box for easy delivery and setup.Easy installation that can be done in 3 minutes. Worry-Free 5 Year Limited Warranty Included: We believe that you will love this sleep item and are dedicated to giving you the best night of sleep through our superior products. If your topper is defective or damaged during delivery, our U.S.-based customer support team will happily work with you to address any concerns to make it right.